JSON Schema Generator

Generate JSON Schema from your JSON input with customizable options.

JSON input area. Paste or enter your JSON data here.
JSON Schema Output
Schema will appear here...

Generation Options

Generation Rules

  • Infers types from example JSON
  • Supports Draft 04/06/07 schemas
  • Optional required fields marking
  • Can include property descriptions
  • Handles nested objects and arrays

Common Schema Issues

IssueExampleSolution
Type mismatch{"age": "25"} vs "type": "number"Fix sample data
IncompleteMissing nested propertiesProvide complete examples
Over-constrainedToo many required fieldsMark only essential fields

Pro Tips

  • Provide complete example data
  • Mark truly required fields only
  • Use descriptions for documentation
  • Select the appropriate schema version